Peugeot and Citroen Airbag Module Dump: Crash Data Reset on 208, 308, Rifter and C4

Peugeot Rifter, 2020, minor front-end bump, both front airbags fired. The bodyshop has fitted new bags and a pretensioner and now wants the light off. The module under the centre console reads 9823741280. It still communicates with Diagbox, but the crash record is locked in and the tool won’t clear it. The general rules for crash data are in our airbag section; this post is about what changes when the badge is a lion or a chevron.

Who built your PSA airbag module

• Autoliv: 206, 307, C3 I, Berlingo, Partner and the 407 on most versions. External EEPROM, the easy generation.
• Continental / Siemens VDO: 207, 308, 3008, C4, C5, DS3 and most cars from 2007 to about 2016. Crash data in the microcontroller’s own memory, with the record kept in more than one place.
• Continental and Autoliv on the EMP2 platform: 308 II, 3008 II, Rifter, Berlingo III, C5 Aircross. 9823741280 belongs here. Locked microcontrollers, and Diagbox telecoding is strict about the VIN.

Why the crash record needs a dump, not a scanner

A deployment writes a permanent flag into the module memory. Diagbox can read it and can clear the ordinary faults around it (resistance, open circuits), but it cannot erase the deployment record; that’s a design decision, not a tool limit. The fix is to read the memory, clear the crash block, and write the module back, or to buy a new unit and telecode it.

Dump-based reset: what has to be true

1. The pyrotechnic outputs must be healthy. A module that has fired can have damaged output stages. Test the resistances at the module connector with the bags disconnected and shorting plugs fitted, or the module will refuse the new bags anyway.
2. The read must be complete. On Continental units the crash flag is kept in more than one location, and clearing only the obvious block gives a module that passes on the bench and locks again at the first ignition cycle.
3. The VIN and the telecoding stay as they were. Our cleared files keep them so Diagbox doesn’t see a new module.
4. After writing, run Diagbox: read the module, check the configuration against the car, clear DTCs in all modules, cycle the ignition three times and confirm the light goes out.

When the module must be replaced

• Any physical damage to the housing or the connector, or a module that has been under water.
• Internal fault codes that survive the reset (accelerometer or internal sensor faults).
• Side-impact deployments on the later Continental units: the satellite sensors and the module are matched, and a module that fired a curtain often reports a drive-stage fault afterwards.
• Any doubt at all. This is the one module in the car where ‘seems fine’ is not a repair.

A new or used module then has to be telecoded in Diagbox: the VIN is written, the configuration (number of seats, side bags, pretensioners, occupant detection) is set, and the module locks to that VIN. A used unit that is already telecoded to another car needs a virgin dump first, which is a job we do on the same numbers.

What went wrong on the bench

A 208 Continental module, reset by a generic ‘clear crash’ tool that patched one block. Light off, car delivered, back three days later with the record restored. The full read showed the second copy untouched. The module had to be read completely and the file compared with a clean reference, not patched by pattern.

Is this legal?

Resetting a module after a proper repair with new pyrotechnics is normal workshop practice in the EU. Fitting a reset module without replacing the fired components is not, and the module’s own resistance check will usually catch it anyway.

Does the reset touch the seat occupancy calibration?

No, but a front seat that came out for the pretensioner needs its occupancy mat checked in Diagbox afterwards. A crash file and a seat fault look the same from the driver’s seat: one light.

The Rifter 9823741280 and other PSA airbag units are in the airbag category, and the rest of the Peugeot range is on the brand page. For a crash-cleared or virgin version of a number we don’t list yet, send the full read and a label photo through the request form and we’ll prepare it from your own file.